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Conquer tough terrain and grab attention with a rugged timepiece boasting a bold, eye-catching color scheme.

Designed to work even in the harshest environments, MASTER of G specialty watches take timekeeping to new heights with a rugged design accented in the bright yellow used for emergency rescues.

The GGB100 MUDMASTER employs high rigidity carbon in the case to keep damage and warping at bay and ensure extreme airtightness and shock resistance. This timepiece also features a filter to protect against mud, a stainless steel panel back, and a back cover made of shock-resistant fine resin embedded with glass fibers, giving it a high level of resistance to dust and mud. The bezel also uses three layers of fine resin with carbon fiber inserts. This tough, rugged design is accented in bright bold yellow.

Practical and functional, this watch is equipped with digital compass, altimeter/barometer, thermometer and step counter. Easily correct the time using the dedicated G-SHOCK app, and tap into loads of other useful features including the Mission Log, which automatically records altitude data obtained from the watch and route data obtained by your smartphone.

Case size (L× W× H)
55.4 × 51.3 × 19.4 mm
Weight
92 g
Case and bezel material
Case / bezel material: Carbon / Resin 
Band
Resin Band
Construction
Shock Resistant
Mud Resistant
Carbon Core Guard structure
Water resistance
200-meter water resistance
Power supply and battery life
Approx. battery life: 2 years on CR2025

Sensor feature
Step count using a 3-axis acceleration sensor: 0 to 999,999 step count display range
Power Saving: Auto sensor sleep state entry after fixed period of non-activity
Altimeter
Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.)
Measuring unit: 1 m (5 ft.)
Hand indication graph of altitude differential
Manual memory measurements (up to 14 records, each including altitude, date, time)
Auto log data (High/low altitudes, cumulative ascent and descent)

Others:
Relative altitude readings (±100 m /±1000 m), selectable measurement interval: 5 seconds or 2 minutes (1 second for first 3 minutes only)
*Changeover between meters (m) and feet (ft)
Barometer
Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
Measuring unit: 1 hPa (0.05 inHg)
Hand indication of pressure differential (±10 hPa)
Atmospheric pressure tendency graph (last 20 hours or last 56 hours)
Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)
The atmospheric pressure tendency graph can show the last 20 minutes or last 56 minutes of measurements.
The hand indication of pressure differential shows values in units of ±0.1 hPa.
*Changeover between hPa and inHg
Digital compass
Measures and displays direction as one of 16 points
Measuring range: 0 to 359°
Measuring unit: 1°
60 seconds continuous measurement
Hand indication of north
Magnetic declination correction
Direction calibration (2-point calibration, figure eight calibration, auto calibration)
Thermometer
Measuring range: -10 to 60℃ (14 to 140℉)
Measuring unit: 0.1℃ (0.2℉)
*Changeover between Celsius (℃) and Fahrenheit (℉)

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

 

Returning Merchandise to ArizonaFineTime.com

 

DOMESTIC (orders shipped to the 50 United States , Puerto Rico , and APO/FPO addresses)

 

ArizonaFineTime.com will accept the return of merchandise within 7 days of receipt of merchandise. Upon receipt and acceptance of your return, azfinetime.com will refund your purchase price, minus shipping*, handling, or other charges. Merchandise must be in "new and unused condition" (defined below) to be acceptable for refund or exchange. Special orders are not returnable. Refunds will be in the original form of payment.

 

*If you receive damaged or incorrect merchandise, contact a Customer Service Specialist no later than 2 business days after receipt at 480-214-0272 or 1-800-486-3996. If there is extensive damage to the box, refuse delivery and contact a Customer Service Specialist immediately at 480-214-0272 or 1-800-486-3996.

 

INTERNATIONAL (orders shipped outside the U.S. )

 

If you received the wrong product or a defective item , you can return the item within 7 days of receipt of merchandise for a full refund of your purchase price, minus shipping*, handling, gift packaging, or other charges. Upon receipt and acceptance of your return, your refund will be issued.

 

ALL RETURNS/EXCHANGES

 

The returned merchandise must be accompanied by proof of purchase and all original documentation and packaging; otherwise, the return will not be honored.

 

You must obtain a Return for Inspection (RFI) number from Arizona Fine Time before returning merchandise. We will not accept any returned merchandise without an RFI number. Contact a Customer Service Specialist by calling 480-214-0272 or 1-800-486-3996 to obtain an RFI number.

 

All merchandise is visually inspected upon receipt for signs of wear prior to the issuance of any refunds, exchanges or credits. "New and unused condition" means that there are no scratches, marks, or blemishes; the security tags are still attached; and the item must not have been sized or altered in any way. We cannot accept a return of any item with any indication that it has been used.

 

Return Instructions:

 

- Repack the merchandise in its original packaging materials, including all paperwork.
- The RFI number must be written on the original invoice and on the pre-printed return shipping label.

 

ArizonaFineTime.com is not responsible for merchandise that it does not actually receive or is not returned in accordance with these terms. Please contact our Customer Service Department at 480.214.0272 or 1.800.486.3996 if you have any questions or concerns.